1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a37362f6a6ee0bd6a69db6379345a3cddfa5db65934788318aac2dc72d8c3c6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d549b031-6c01-4473-bdc7-fb2a6a2fbfa1.json and https://artists.proofprofile.net/proofs/artist/d549b031-6c01-4473-bdc7-fb2a6a2fbfa1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f72e30d848d79bfc1161514d137b2a1c0322ed9be619b9bb7b245e205854f42. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452114555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac390330277a50ecfe6371a0890fb0d90e51b5515617ae1e39534e22fdde1ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452114556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb95e521f53c9e651ac1b2dd6ec1b0f9cf07cc5b379ee5d3365d055b3ca5b94. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452114557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941dc934cddf689009357e27644cf766ed3e84f52b37dbfa43833e521a8955c9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452114558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe5a97249ced088fc620b491432094fed109059b7eacb4816ab9e88c47e3ea6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762139462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33ef4fa633b8c779c77f288463fe4c012b34e9cf82019da75a41a38beb20d79. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762139463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bf34c2c2492de82bbd4ecc90ce056042263480a4e60873b39bf143d250b1ee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762139464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960ec7bda08ae603eb1562f169798d64485d36bef9ebcd822b77fc9b64672f93. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762139465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e5f9e417a30901a5de2c03c05f5ee8a4f7a1eb48c170a11b740ef7068feb62. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2272650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4c74dbf14672556d896707f15e83e51d83b37fe37f17a15a6d15e08d7b3fee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2272651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e18136593d184b835abdd18789aef04a7d95fe9aff00b215ddc667271cb64a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762300785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa927b849e1e745a85b1497033c8ad18e57d3b245cd1fb4a861dbcdb6ad8b58ce. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762300786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eebfa4f340ef2a8e0dc855859221d9db51c79b3e326dcf13988bc677de942a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762300787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826f0154da0efa91d9d48048714388f1768216cd46d32dfb1c2788726576b265. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732336104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b6b486ea77ad8cfe27db55156a8d791d21c0cc607e76087b82f83aa98c0b78. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA072201613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6aab1bd368231cec5653456024185e5e70b90d6ff7af85559a6b101da4c7c03. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA072201614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ce83d718470e5bff7e9117c83c472249325279be5a9e256b911a61b3eb8c47. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA072201615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9b18f3c80f297e7fb2841fdb2c6ce0e3eac87cd595c5adf2473134744a6e56. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CNZ822200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36407731f0d8e88f61f9c24d34a6f5da0e71b5e01cf919ff378c9b2039115e03. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG732229197.